|Route Number|Terminals|Terminals|Via|Operator|Notes|
|---|---|---|---|---|---|
|310  310A  311|Waltham Cross Bus Station|Hertford Bus Station|Cheshunt, Broxbourne, Ware|Arriva Shires & Essex, Centrebus|Mon-Sat (310), Mon-Fri peaks (310A),.|
|323|Broxbourne Station|Essex Road Industrial Estate|Hoddesdon|SM Coaches|Mon-Fri peak hours. Herts CC contract. Times|
|392|Harlow Town Station|Rye Park Old Highway|Nazeing, Broxbourne|Network Harlow|Mon-Sat. Essex CC contract. Times|
|641|Broxbourne Station|Hatfield Business Park|Hertford, University of Hertfordshire|Uno|Mon-Fri University term time only.|
|C3/C3A|Waltham Cross|Harlow Bus Station|Cheshunt, Broxbourne|Trustybus|Mon-fri. 2 buses per hour operate to Harlow. Sat 1 bus per hour to Harlow via Hunsdon|
|C4|Waltham Cross Bus Station|Hertford Bus Station|Cheshunt, Ware|Trustybus|Sundays.|

Question: how many bus routes are handled by trustybus?
Answer: 2